diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 5c34fd04453..61366b3e1e8 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -155,12 +155,6 @@ check_symbol_exists(isatty unistd.h HAVE_ISATTY)
 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
 check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
-if( HAVE_SETJMP_H )
-  check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
-  check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
-  check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP)
-  check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP)
-endif()
 # AddressSanitizer conflicts with lib/Support/Unix/Signals.inc
 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*")
   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
diff --git a/include/llvm/Config/config.h.cmake b/include/llvm/Config/config.h.cmake
index 20e70851cde..5940a160924 100644
--- a/include/llvm/Config/config.h.cmake
+++ b/include/llvm/Config/config.h.cmake
@@ -154,9 +154,6 @@
    the current directory to the dynamic linker search path. */
 #undef HAVE_LINK_R
 
-/* Define to 1 if you have the `longjmp' function. */
-#cmakedefine HAVE_LONGJMP ${HAVE_LONGJMP}
-
 /* Define to 1 if you have the <mach/mach.h> header file. */
 #cmakedefine HAVE_MACH_MACH_H ${HAVE_MACH_MACH_H}
 
@@ -239,9 +236,6 @@
 /* Define to 1 if you have the `setenv' function. */
 #cmakedefine HAVE_SETENV ${HAVE_SETENV}
 
-/* Define to 1 if you have the `setjmp' function. */
-#cmakedefine HAVE_SETJMP ${HAVE_SETJMP}
-
 /* Define to 1 if you have the `setrlimit' function. */
 #cmakedefine HAVE_SETRLIMIT ${HAVE_SETRLIMIT}
 
@@ -251,15 +245,9 @@
 /* Define to 1 if you have the `sigaltstack' function. */
 #cmakedefine HAVE_SIGALTSTACK ${HAVE_SIGALTSTACK}
 
-/* Define to 1 if you have the `siglongjmp' function. */
-#cmakedefine HAVE_SIGLONGJMP ${HAVE_SIGLONGJMP}
-
 /* Define to 1 if you have the <signal.h> header file. */
 #cmakedefine HAVE_SIGNAL_H ${HAVE_SIGNAL_H}
 
-/* Define to 1 if you have the `sigsetjmp' function. */
-#cmakedefine HAVE_SIGSETJMP ${HAVE_SIGSETJMP}
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #cmakedefine HAVE_STDINT_H ${HAVE_STDINT_H}